GDM: Insulin with or Without Metformin?

Trial statusRecruiting
Trial phasePhase 4
Trial typeInterventional
Biological sexFemale
Age18-50
SponsorUniversity of Virginia

About this trial

This will be a randomized trial of patients with gestational diabetes who start hypoglycemic therapy with metformin but eventually require insulin. It will examine whether continuing metformin when adding insulin versus discontinuing metformin when insulin is added is beneficial. The investigators hypothesize that continuing metformin will reduce the needed insulin dosage and improve maternal and neonatal outcomes in these patients.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Provision of signed and dated informed consent form

Stated willingness to comply with all study procedures and availability for the duration of the study

Pregnant female meeting diagnosis for gestational diabetes requiring medical treatment

Ability to take oral medication and be willing to adhere to the metformin regimen

Disqualifiers

1) Metformin allergy or known intolerance, known hypersensitivity to insulin 2) Severe hepatic dysfunction 3) Chronic kidney disease 4) Pregnancy with major fetal anomalies 5) Non-viable pregnancy

Trial design

Design model

Parallel

Treatments tested in this trial

  • Metformin + Insulin

    Drug

    Pregnant women who have have gestational diabetes and have uncontrolled blood sugar with metformin alone will stay on metformin and add insulin.

  • Insulin

    Drug

    Pregnant women who have have gestational diabetes and have uncontrolled blood sugar with metformin alone will stop on metformin and add insulin.

Treatment groups

130 Participants
are divided into 2 treatment groups
Group A: Metformin + InsulinActive comparator 1 intervention
Group B: InsulinActive comparator 1 intervention

Trial outcomes

Primary outcomes

1

To determine if metformin reduces amount of insulin in patients with gestational diabetes who already require insulin

Insulin dosage (units per kilogram body weight) at last visit prenatal visit

Time frame
From enrollment into study until delivery, maximum 20 weeks

Secondary outcomes

Other outcomes

Sponsors and contacts

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